William mollee



(No Model.)

W. MULLER.

AMALGAMATOR. No. 251.914. l Pamented Ja,11.v3,]1882.

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UNITED STATES PATENT OEEIGE.

WILLIAM MOLLER, OFNEW YORK, N. Y.

AMALGAMATOR.

SPECIFICATION forming part of Letters Patent-No. 251,914, dated January3, 1882.

i pplication filed July 16, 18,81. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM MOLLER, a citizen of the United States,residing at New York, in the county and State of New York,

have invented new and useful Improvements` in Amalgamators, of which thefollowing is a specification.

This invention relates to that class of amalgamators in which the mixedpulp and mercury are subjected to the triturating action of revolvingmullers co-operatin g With a suitable bed, the mullers being connectedto a vertical shaft in the center of the amalgamating-pan.

My invention consists in the combination, with the amalgamating-pan, avertical shaft, a bed surrounding the latter, and a series ofgravitating mullers operated by the shaft, of anannnlar trough elevatedabove the plane of the bed on which the mullers travel and below thelateral discharge-orifice in the amalgamating-pan, whereby the heavyparticles of metal which are set free are deposited in the elevatedannular trough, while the finer or `lighter particles of metal iioat offthrough the discharge-orifice vof the pan.

The amalgamating-pan is constructed with an outlet-orifice in its sideand with a lateral branch or wing opposite to such orilice having traps(one or more) in the bottom thereof, andi in the branch or wi-ng of thepan are arranged cloth-covered rollers,(one or more) dipping into thetraps, so that the ne or floating metal adheres to the rollers, and ifthe traps are supplied with mercury the metal is thereby absorbed fromthe rollers, forming an amalgam.

This invention is illustrated in the accompanying drawings, in whichFigure 1 represents a plan or top view. Fig. 2 is a verticallongitudinal section. y

' Similar letters indicate corresponding parts.

The letter A designates the amalgamatingpan; B, the vertical shaft; C,the bed; D, the lnullers; E, the trough; F, the outlet-oriiice of thepan; G, the branch or wing of the pan; H,

the traps, and I the rollers.

The pan A has the usual circular shape, and the shaft B extends througha pillar, J, in the center thereof, while the bed C surrounds the shaft,the bed being placed on the bottom of the'pan and having, like the pan,a circular outline. The mullers D are connected to the shaft B by radialarms K, projecting from a hub, L, on the shaft, and they rest on theupper or grinding surface of the bed `C by their inherent gravity.

The trough E has an annular shape and surrounds the bed C, while it israised above the' upper surface of the bed, as shown, the same beingsituated next to the side of the pan, and being preferably arrangedabove a heatingchamber, N, adapted to be supplied with steam or thelike. From the bottom of the annular trough E extends a discharge-port,O, provided with a valve, P.

The outlet-orifice F is in the side of the pan A above the annulartrough E, and the branch or wing G of the pan projects laterallytherefrom opposite to the outlet-orice, while the traps H are formed inthe bottom of the branch or wing, each being provided with a plug, Q.The brauch or wing G, moreover, is provided with an escape-pipe, R, andthe outlet-orifice F with a gate, F.

The rollers I are covered with cloth, and they extend parallel to thetraps H directly above them, their shafts being so arranged that therollers dip into the traps-namely, with their cloth coverings. Saidshafts of the rollers I have their bearings iu the sides of the branchor wing G, and they are provided with pulleys S, connected together by abelt, T, one of the shafts being, moreover, provided with adriving-pulley, U. of the rollers I may be arranged in the form of iiapsto increase the effective area of the rollers. 4

The. ore to be amalgamated is fed to the pan in the form of a pulp,together with a suitable quantity of mercury, as near a s possible tothe center of the pan, and a revolving motion being imparted to thevertical shaft B, the mixture is subjected to the action of the mullersD, and the heavy particles of metal thereby set free are deposited inthe annular trough E, while the line or lighter metal floats oft' intothe branch or wing G, where it is caught by the rollers I. lThe traps Hare supplied with mercury, and a revolving motion being imparted to therollers I, the metal adherin g thereto isprcsented to the mercury and isabsorbed thereby. In this manner the waste of metal is prevented to thegreatest possible extent, and a maximum yield is obtained from a givenquantity `of ore.

If desired, the cloth coverings IOC The traps H and the cloth-coveredrollers dipping therein can be used also independently of the pan-as,for example, the ore may be fed thereto from the zinc plates ofastampmill, and in that event the traps may be suspended in a box, sothat the sand readily separates from the lighter particles and collectson the bottom ofthe box.

What I claim as new, and desire to secure by Letters Patent, is-

1. In an amalgamating apparatus, the c0111- bination, with the pan, thevertical shaft B, the bed surrounding the shaft, and the revolvinggravitating mullers, of the annular trough E, elevated above the planeof the bed on which the mullers travel, and arranged adjacent to thesides or vertical Walls of the pan below the lateral outlet-orifice inthe latter, all substantially as and for the purpose described.

2. The combination, substantially as hereinzo

